[02/26/2019 @ 7:36 PM] Deal is back on.
American and British Airways have round-trip flights from Austin (AUS) to Madrid or Barcelona (MAD/BCN) starting at $458. Flights in February, March, October, November, December, and January. 6-day minimum stay required. New Years is available in Madrid if you can stay 12-days or longer. Flights may operate as a code-share on a Oneworld carrier.
Note: Fare allows for free carry-on bag, but a checked bag will cost +$60 each-way. Upgrades into “Regular Economy” are available for +$55 each-way. You can avoid paying a seat selection fee by accepting the randomly assigned seat at the gate.